Rotary brush.



3- RI BADINSE.

ROTARY BRUSH.

APPLICATION FILED JUNE 23, I9I9.

Patented Dec. 30, 1919 on'rrn e RUDOLF R. BADINSE, OF CLEVELAND, OHIG.

ROTARY BRUSH.

Specification of Letters Patent.

Patented Dec. 30, 1919.

Application filed June 23, 1919. Serial No. 306,205.

To all whom it may concern:

Be it known that I, RUooLr R. RADINsE, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Rotary Brushes, of which the following is a specification.

This invention relates to rotary brushes and more particularly to that type of brush in which the bristles or wires are adapted to be fitted on or to be fastened to a rotary shaft.

An important object of the invention is in an improved means for preventing the bristles from lateral movement, thereby preventing crystallization in the case of wire bristles causing them to break or fall off, this result being efiected by the use of two metal rings which are clamped about the bristles in a manner to be hereinafter de scribed.

A further object of the invention is in the provision of means for holding the wires or bristles in place as particularly pointed out in my former Patent No. 988,506, bearing date of April 4, 1911.

The invention has the advantage of requiring only a single central plate to hold the parts of the brush in place and accordingly the parts may be cheaply constructed and easily assembled.

Referring to the drawings forming part of this specification and in which like reference numerals designate similar parts throughout the various views, Figure 1 is a side elevation of a brush constructed in accordance with the principles herein set forth and Fig. 2 is a section on the line 22 of Fig. 1.

The device comprises a central plate 10 having an axial hole 11 by means of which it is fitted to a spindle or shaft and suitably clamped by any appropriate means.

At its outer edge this plate, which is substantially circular in plan, is provided with a series of tongues 12 which ,are integral therewith, these being stamped from a single piece of sheet metal of which the plate is formed; the tongues are alternately bent in opposite directions so as to clamp a retaining ring 13 of twisted wire into the bands or twists, to which ring the wires, fibers or bristles 14 are woven or inserted, and then folded over so that the ends of the wires or bristles extend outwardly or radially so as to present the free ends to the work which may be applied to the brush.

Two flat rings 15 and 16 having an outside diameter greater and an inside diameter slightly less than the outside diameter of the tongues are placed between the bristles and the tongues, and the provision of this plate prevents the bristles from bending over under pressure providing thereby a more uniform clamping arrangement between the opposite tongues of the plate.

In assembling the parts the tongues are alternately sprung apart in opposite directions or toward the opposite side of the plate and the wire ring 13 with the bristles attached thereto is inserted between said tongues. The rings 15 and 16 are then placed upon each side of the bristles, the tongues 12 are pressed together or clamped upon the plates, the pressure exerted there upon being sufficient to create a curving of the rings 15 at points between the tongues 12 and also enough to securely clamp the abrading wires or bristles in position. It has been found unnecessary to provide any means to further securing the parts together, although it is obvious that the tongues may be riveted or welded to the rings 15 and 16 but this has the disadvantage of preventing the removal of any parts for replacement, consequently I prefer to leave the parts in a dis-united position further than is effected by the clamping due to the pressure exerted thereto. To insert new brush material it is merely necessary to pry the tongues of one side apart permitting the removal of the wire 13 and the strands therewithin and to substitute new parts for those removed.

It is obvious that various kinds of material may be used for forming a brush, such as strips of cloth and the like when it is desired to use the brush for bufling purposes, this being clamped in the same manner as before described and while I have shown this particular form of device it is apparent that numerous other forms may suggest them selves to those familiar with the Work required and I do not wish to limit myself further than is required by the state of the art and to that which is within the scope of the appended claims. I

Having thus described my invention, what I claim is;

1. A rotary brush comprising a plate having tongues at the outer edge thereo of side rings extendi the plate between material clamped 5 held by the pressure 0 ring ing taining ring fitting 10 fibers connected to se ng around the e A rotary brush comprising a plate havtongues at the outer edge thereof, a re- Witnesses:

between said t0ng11es,- id ring and projecting :E, a pair outwardly therefrom, and a pair of side dge of rings clamped between the tongues at ope tongues, and brush posite sides of said retaining rin between the rings, and In testimony whereof, I do 21%;; my sigf the tongues on said nature in presence of two witnesses.

BUD OLF R. RADINSE.

JOHN A. BQMMHARDT, ROBERT L. BRUCE. 

